Browsing Institutt for biologi by Title
Now showing items 741-760 of 2571
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Effects of Experimental Winter Warming on Trade-offs Between Growth and Reproduction in High Arctic shrubs
(Master thesis, 2022)Arktis varmes fortere enn det globale gjennomsnittet, og frekvensen av ekstremvær om vinteren øker. Bakkeis og tine-fryse episoder er to mulige utfall av ekstreme varmeperioder på vinteren og vinterregn. Disse kan dekke ... -
Effects of Exposure Timing on cyp1a Expression, PAH Elimination, and Lipid Utilization in Lumpfish Embryos Exposed to Produced Water
(Peer reviewed; Journal article, 2023)Intentional discharges of produced water from oil production platforms to the marine environment contain a complex mixture of toxicants, including polycyclic aromatic hydrocarbons (PAHs). Early life stages of fish are ... -
Effects of feeding with copepod nauplii (Acartia tonsa) compared to rotifers (Brachionus ibericus, Cayman) on quality parameters in Atlantic cod (Gadus morhua) larvae
(Master thesis, 2011)Good nutritional quality is a key for a successful Atlantic cod (Gadus morhua) juvenile producer. Copepods are the natural prey for marine fish larvae, and its nutritional composition is believed to be optimal for the ... -
Effects of fire on large herbivores and their forage resources in Serengeti, Tanzania
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:239, Doctoral thesis, 2007)Fire is one of the major ecological factors that determines structure and function of grassland and savanna ecosystems through its effects on soil nutrient pools, floristic composition and primary production, and foraging ... -
The effects of fish meal replacement with ultra-micro ground mixed plant proteins (uPP) in practical diet on growth, gut and liver health of common carp (Cyprinus carpio)
(Peer reviewed; Journal article, 2020)Plant proteins are widely used for fish meal replacement in aquafeeds, but anti-nutritional factors in plant protein reduce fish growth performance and impair fish health. The present work aimed to study the effects of ... -
Effects of gadolinium (Gd) and a Gd-based contrast agent (GBCA) on early life stages of zebrafish (Danio rerio)
(Peer reviewed; Journal article, 2023)Gadolinium (Gd) is one of the rare earth elements (REY) and is widely used in magnetic resonance imaging (MRI) contrast agents. Anthropogenic Gd enrichment has frequently been found in wastewater treatment plant effluents ... -
Effects of inbreeding on fitness-related traits in a small isolated moose population
(Journal article; Peer reviewed, 2013)Inbreeding can affect fitness-related traits at different life history stages and may interact with environmental variation to induce even larger effects. We used genetic parentage assignment based on 22 microsatellite ... -
Effects of inbreeding on lay date in house sparrows (Passer domesticus)
(Master thesis, 2021)Innavlsdepresjon (en reduksjon i individuell fitness forårsaket av innavl) har blitt observert hos mange ulike arter, men mekanismene som gir innavlsdepresjon er fremdeles uklare. Innavl og innavlsdepresjon studeres vanligvis ... -
“Effects of inbreeding on nestling fitness in an insular house sparrow metapopulation in northern Norway”
(Master thesis, 2022)Inbreeding may contribute to the extinction risk of small and fragmented populations by reducing individual fitness (inbreeding depression). Quantifying inbreeding depression (ID) in early life-stages is vital for understanding ... -
Effects of individual variation on social foraging dynamics in the house sparrow, Passer domesticus
(Master thesis, 2023)Personlighet hos dyr blir definert som konsekvente individuelle forskjeller i gjennomsnittlig atferd. I et sosialt miljø kan slike forskjeller bli formet av individuelle iboende egenskaper, samt indirekte fitness-effekter ... -
Effects of intra- and interspecific competition and hydropeaking on growth of juvenile Atlantic salmon (Salmo salar)
(Journal article, 2017)The effects of hydropeaking and intra- and interspecific competition on the growth performance (growth in length, mass and lipid content) of juvenile Atlantic salmon Salmo salar and brown trout Salmo trutta were studied ... -
Effects of introduced planktivorous fish on the seasonal dynamics of freshwater zooplankton
(Master thesis, 2022)Introdusert planktivore fisk i ferskvann kan ha en betydelig effekt på næringsnettet ved å fungere som en kontroll ovenfra og ned på zooplankton, med mulige kaskadeeffekter på lavere trofiske nivåer. Imidlertid er det ... -
Effects of land use and season on flowering plants and plant-pollinator networks in urban grasslands
(Master thesis, 2021)Plant-pollinator ecological relationship is crucial interaction in global biodiversity as it maintains pollination services and balances biotic communities in the ecosystem. Land-use changes in urban grasslands may affect ... -
Effects of land-use on bumblebees and other pollinators in urban grasslands
(Master thesis, 2021)Semi-naturlege grasmarker er eit av dei viktigaste habitata for humler og andre pollinatorar, men endringar i arealbruk truer denne habitattypen. Opphøyr av skjøtsel, med påfølgande gjengroing er truleg ein av dei viktigaste ... -
Effects of Lichens on Seed Germination and Seedling Emergence of Vascular Plants on Dovre
(Master thesis, 2015)Lichens are observed to decline when shrub covers increases due to global warming and reduced grazing in alpine and arctic areas. However, lichens are still prominent in many mountain habitats where they cover large areas. ... -
Effects of light and temperature regimes on the sexual maturation of male lumpfish (Cyclopterus lumpus).
(Master thesis, 2019)Nowadays salmon lice (Lepeophtheirus salmonis) constitutes one of the biggest threats to the welfare of farmed Atlantic salmon (Salmo salar). Lumpfish (Cyclopterus lumpus) are currently deployed in sea cages with salmon ... -
Effects of live feed quality on cod (Gadus morhua L.) larval hepatocyte and enterocyte development
(Master thesis, 2011)Production of high quality juveniles is still a bottleneck in the intensive culture of cod (Gadus morhua L.), and suboptimal nutrition at the larvae s early life stages is one of the decisive factors for this. The cod larva ... -
Effects of live feed quality on cod (Gadus morhua L.) larval muscle growth and development: .
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Effects of local density dependence and temperature on the spatial synchrony of marine fish populations
(Peer reviewed; Journal article, 2023)Disentangling empirically the many processes affecting spatial population synchrony is a challenge in population ecology. Two processes that could have major effects on the spatial synchrony of wild population dynamics are ... -
Effects of manipulated levels of predation threat on parental provisioning and nestling begging
(Journal article; Peer reviewed, 2019)Parental provisioning behavior is a major determinant of offspring growth and survival, but high provisioning rates might come at the cost of increased predation threat. Parents should thus adjust provisioning activity ...